ZXSP v0.8.0.pre5 is released. zxsp is a simulator for the historic Sinclair ZX home computer families for Mac OS X. zxsp simulates the black&white models ZX80 and ZX81, the Jupiter Ace, the ZX Spectrum models with 16K and 48K ram, the Spanish clone from Inves, the +128, +2, and the +2A/+2B including the Spanish and French localised versions.

ZXSP Changelog:

0.8.0.pre4 This version runs on Mac OS X 10.7 on Intel and maybe on older versions of OS X. Please send me bug reports! New in this preview version: Save snapshot back in: Save .sna, .z80, .o, .80, .p, .81, .scr and .rom. 0.8.0.pre3 New in this preview version: Some improvements with the inspector windows handling. Display of "Machine image". "Instant load" standard tape blocks for ZX80 and ZX81.

Download: ZXSP v0.8.0.pre5
Source: Here